A former attorney for Toyota has accused the automaker of illegally withholding evidence in hundreds of rollover death and injury cases, in a "ruthless conspiracy" to keep evidence "of its vehicles' structural shortcomings from becoming known."

The explosive allegations are contained in a federal racketeering suit filed in Los Angeles by Dimitrios P. Biller, former managing counsel for Toyota Motor Sales, USA, Inc., who claims his complaints about the company's legal misconduct cost him his job.

Toyota, which is second to General Motors in car and truck sales in the U.S., called Biller's charges "inaccurate and misleading," in a statement issued late Friday to CBS News. "Toyota takes its legal obligations seriously and works to uphold the highest professional and ethical standards," the company said.